161002013 has 4 divisors (see below), whose sum is σ = 162231168. Its totient is φ = 159772860.

The previous prime is 161001977. The next prime is 161002033. The reversal of 161002013 is 310200161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161002013 - 2⁶ = 161001949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161002033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614381 + ... + 614642.

It is an arithmetic number, because the mean of its divisors is an integer number (40557792).

Almost surely, 2^161002013 is an apocalyptic number.

It is an amenable number.

161002013 is a deficient number, since it is larger than the sum of its proper divisors (1229155).

161002013 is a wasteful number, since it uses less digits than its factorization.

161002013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229154.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 161002013 is about 12688.6568635140. The cubic root of 161002013 is about 544.0144498126.

Adding to 161002013 its reverse (310200161), we get a palindrome (471202174).

The spelling of 161002013 in words is "one hundred sixty-one million, two thousand, thirteen".